Twenty-seven cities have planned events where hackers will have access to data from The Department of Labor, The Census Bureau, and even NASA’s space stats. It’s a joint project from the U.S. government, Code For America, Random Hacks Of Kindness, and Eric Schmidt’s early-stage venture fund Innovation Endeavors.

The mandate may bring new life to efforts started by the Obama administration with the launch of Data.gov four years ago. It would also expand an order issued in 2012 to open up government systems with public interfaces for commercial app developers.